Mark the desired stating point as "Text" with semantics. It will show as the following in the OPF guide:
Code:
<guide>
<reference href="Text/An%20Amateur%20Fireman.htm" title="Cover" type="cover" />
<reference href="Text/An%20Amateur%20Fireman_0001.htm" title="Title Page" type="title-page" />
<reference href="Text/An%20Amateur%20Fireman_0002.htm" title="Table Of Contents" type="toc" />
<reference href="Text/An%20Amateur%20Fireman_0003.htm" title="List Of Illustrations" type="loi" />
<reference href="Text/An%20Amateur%20Fireman_0004.htm" title="Text" type="text" />
</guide>
Edit the OPF to change the Text to Start Reading or whatever you wish as shown in the following.The Type must be start.
Code:
<guide>
<reference href="Text/An%20Amateur%20Fireman.htm" title="Cover" type="cover" />
<reference href="Text/An%20Amateur%20Fireman_0001.htm" title="Title Page" type="title-page" />
<reference href="Text/An%20Amateur%20Fireman_0002.htm" title="Table Of Contents" type="toc" />
<reference href="Text/An%20Amateur%20Fireman_0003.htm" title="List Of Illustrations" type="loi" />
<reference href="Text/An%20Amateur%20Fireman_0004.htm" title="Start Reading" type="start" />
</guide>
It will appear as an "Other" type error in the validator but works fine.